Greenhouses use sunlight to create a warm environment for plants and fish. They trap solar radiation to keep things warm and use special lenses to focus the light. This helps plants grow well and fish stay healthy. The temperature inside the greenhouse is important for plant growth and early production. Greenhouses can get too hot in the day and too cold at night, so scientists are working on ways to store solar energy to keep things warm at night. They also use sediment and water from traps as natural fertilizers for plants. Overall, greenhouses help extend the growing season and increase productivity, but some need better cooling and heating methods to work well in different climates.